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Product Detailed Parameters
- Description：CMC 180UH 810MA 2LN TH
- Series：3000
- Mfr：Bourns Inc.
- Package：Bulk
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：810mA
- DC Resistance (DCR) (Max)：259mOhm
- Voltage Rating - DC：-
- Voltage Rating - AC：-
- Operating Temperature：-55°C ~ 105°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.490" L x 0.490" W (12.45mm x 12.45mm)
- Height (Max)：0.400" (10.16mm)
- Package / Case：Horizontal, 4 PC Pin
- Inductance @ Frequency：180 µH @ 1 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The Bourns Inc. 3000-181 is a through-hole common mode choke from the 3000 series, designed for signal line applications. It features an inductance of 180 uH with a 15% tolerance and supports a maximum DC current of 810 mA. The component has a maximum DC resistance of 259 mOhms and operates within a temperature range of -55°C to +105°C. Measuring 10.16 mm in length and width with a 12.45 mm diameter, it utilizes radial termination for PCB mounting.
Feature Summary
- Provides common mode noise suppression for signal lines
- Utilizes unshielded construction for standard electromagnetic compatibility needs
- Supports high-temperature operation up to 105°C
Applications
- Signal line filtering in electronic circuits
- Common mode interference reduction in data transmission paths
- PCB-mounted noise suppression for low-current signal integrity
Procurement Notes
Verify RoHS compliance status as sources indicate conflicting information regarding lead content. Confirm availability since some records list the part as discontinued or obsolete. Ensure the specific suffix matches the required termination style and that the manufacturer is correctly identified as Bourns Inc. for accurate sourcing.
Selection Notes
Select this component when a through-hole solution is required for signal lines rather than power stages. The 810 mA rating suits low-current applications. Consider the unshielded design if magnetic coupling with nearby components is not a primary constraint. Verify thermal requirements against the 105°C maximum operating limit.
Part Context
This component belongs to the Bourns 3000 series of signal line common mode inductors. It is distinct from power inductors like the SDR0403-181KL due to its two-line configuration and through-hole package. The series focuses on EMI suppression for sensitive signal pathways rather than energy storage in power converters.
Replacement Considerations
The 3000-181-RC is a documented variant within the same product family. Substitution requires verifying identical electrical parameters including 180 uH inductance and 810 mA current rating. Physical dimensions and mounting style must match the existing PCB footprint.
